Fluid recommendations.... - F-Body Road Racing and Autocross Forums

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Judd View Member Profile	Mar 29 2005, 07:47 AM Post #2
Member Group: Advanced Members Posts: 231 Joined: 9-January 04 From: N.E Ga. Member No.: 112	If you can not get Amsoil {good oil but the craziest supply system} try GM's Syncromesh for the tranny and a good synthetic 75-140 for the rear. In the tranny I've tried the stock fill {Dextron ATF} and Mobil 1 synthetic ATF. I didn't like the M1 at all, made the shifting very notchy. I replaced it after about 5K miles with the Syncromesh. I've had the Syncromesh in for around 35K miles now. BTW, the Syncromesh was recommended by a Ford guy who read about it in a Ford magazine for use in T5s. If Ford folks will recommend a GM product, it must be good. I normally wouldn't run a 140 weight rear fluid in anything other than my 4 wheeler but I think that the 7.5 rear axle needs all the help it can get. I figure that the extra viscosity might help cushion the gears a bit. Haven't broke a 10 bolt yet and I have about 250 1/4 mile passes and about 200 AutoX passes on three different rear axles in 45K miles. Maybe it works maybe it doesn't but it makes me feel better. (IMG:http://www.frrax.com/rrforum/style_emoticons/default/wink.gif) (IMG:http://www.frrax.com/rrforum/style_emoticons/default/biggrin.gif) If you have a Torsen {which you should have unless you optioned the Auburn}, you don't even have to worry about a friction modifier.

Posts in this topic

396 Hawk Fluid recommendations.... Mar 29 2005, 04:01 AM

bobbylee I use Amsoil universal ATF in the trans. There ar... Mar 29 2005, 04:54 AM

Judd If you can not get Amsoil {good oil but the crazie... Mar 29 2005, 07:47 AM

KeithO In my old LS1 and my current LT1, I generally use ... Mar 29 2005, 10:56 AM

pknowles I use Redline 75-90 in the rear and Valvoline stan... Mar 29 2005, 11:53 AM

robz71lm7 Redline 75w90 regular or shockproof. If I were ru... Mar 29 2005, 02:43 PM

trackbird I've got Mobile 1 in my trans and it works jus... Mar 29 2005, 03:47 PM

AllZWay In my Camaro I use Mobil 1 throughout and have had... Mar 29 2005, 04:38 PM

Teutonic Speedracer I've been using Redline D4 ATF in the tranny a... Mar 29 2005, 05:06 PM

sgarnett The gear oil choice for the rear depends on the di... Mar 29 2005, 06:06 PM

bigshoe I have d4 in my tranny and one of the redline flui... Mar 31 2005, 06:04 PM

sgarnett There's been endless discussion at sites like ... Mar 31 2005, 07:59 PM

Spooner My theory has always been that most people who say... Apr 1 2005, 03:47 AM

bobbylee I dumped the factory fill at about 1500 miles on m... Apr 1 2005, 03:52 AM

Rob 94Hawk 319 Maaan.. Just use some stuff from Phantom Lubricati... Apr 1 2005, 07:23 AM

Soma07 FWIW I've run the following in my T56: 1. Wha... Apr 1 2005, 01:10 PM

Honda93 A resurrected post and it's not even Easter... Feb 24 2017, 02:45 AM

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396 Hawk View Member Profile	Mar 29 2005, 04:01 AM Post #1
newbie Group: Members Posts: 30 Joined: 4-October 04 From: Wilmington, DE Member No.: 478	Even though I don't track my Hawk (for now), I figured I would ask some of you race guys what you use in the tranny (M6) and rear (4.10 10-bolt) of your cars. I'm going to change all of my fluids in the next week or so and have used Redline in the past with pretty good results but have been considering Royal Purple. Any suggestions?